#include<stdio.h>
#include<math.h>
int main()
{
    double a,b,c,disc,x1,x2,p,q;
    scanf("%lf,%lf,%lf",&a,&b,&c);
    disc=b*b-4*a*c;
    p=-b/2.0*a;
    q=sqrt(disc)/2.0*a;
    x1=p+q;
    x2=p-q;
    printf("x1=%7.2f\nx2=%7.2f\n",x1,x2);
}